Plate holder and lateral fusion operation assembly

Abstract

The utility model provides a plate holder and a lateral fusion operation assembly, and relates to the technical field, the plate holder provided by the utility model comprises a pipe body, a clamping jaw assembly and a guide block, one end of the clamping jaw assembly is connected with the pipe body, and the other end of the clamping jaw assembly is connected with the guide block; a clamping channel used for clamping the fixing plate is formed between the side, away from the pipe body, of the guide block and the clamping jaw assembly, an operation channel is formed between the side, facing the pipe body, of the guide block and the clamping jaw assembly, and the guide block is provided with a first wire penetrating hole with the two ends communicating with the clamping channel and the operation channel correspondingly. And the tube body is provided with a second threading hole communicated with the operation channel. The plate holder provided by the utility model can provide an operation space for a tool for screwing a screw, so that an operator can conveniently and obliquely drive the screw into a vertebral body outwards.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a plate holder and a side-path fusion operation component. Background Technology

[0002] Thoracolumbar fusion surgery is one of the main surgical methods for treating thoracolumbar spine diseases. Traditional posterior thoracolumbar fusion surgery has been used clinically for a long time, but it still has many drawbacks, such as greater tissue trauma, a high risk of nerve damage, and disruption of spinal stability. With the development of minimally invasive techniques, lateral thoracolumbar fusion surgery has gradually been adopted.

[0003] In existing thoracolumbar lateral fusion surgery techniques, guide wires are connected to the fusion device to ensure that the fixation plate is accurately aligned with the fusion device, providing a guiding path for aligning the fixation plate with the fusion device. However, the plate holder used to hold the fixation plate adopts a long tubular structure, and the gap formed by the small clamping claws at the end is only used to hold the fixation plate. When connecting the fixation plate to the vertebral body with screws, it is not convenient for the operator to tilt the screws outward and drive them into the vertebral body due to the obstruction of the tubular structure. Utility Model Content

[0004] The purpose of this utility model is to provide a plate holder and a side-path fusion operation component, which can provide operating space for the tool used to tighten screws, making it easier for the operator to tilt the screw outward and drive it into the vertebral body.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] In a first aspect, the present invention provides a plate holder, comprising a tube body, a gripper assembly, and a guide block, wherein one end of the gripper assembly is connected to the tube body, and the other end is connected to the guide block;

[0007] The guide block forms a clamping channel for clamping the fixing plate between the side of the guide block away from the tube body and the clamping jaw assembly, and forms an operating channel between the side of the guide block facing the tube body and the clamping jaw assembly. The guide block has a first wire-passing hole with both ends communicating with the clamping channel and the operating channel respectively.

[0008] The tube body has a second threading hole that communicates with the operating channel.

[0009] In an optional embodiment, the gripper assembly includes a first gripper and a second gripper that are arranged opposite to and spaced apart from each other, with one end of the first gripper and the second gripper connected to the tube body and the other end connected to the guide block;

[0010] The clamping channel is formed between the side of the guide block away from the tube body and the first and second clamps, and the operating channel is formed between the side of the guide block facing the tube body and the first and second clamps.

[0011] In an optional embodiment, both the first gripper and the second gripper include a fixed gripper and a resilient gripper;

[0012] One end of the fixing claw is connected to the tube body, and the other end is connected to the guide block;

[0013] One end of the elastic claw is connected to the fixed claw, and the other end of the elastic claw is suspended in the air. In its natural state, the elastic claw extends into the clamping channel to deform and provide clamping force when the fixed plate is clamped in the clamping channel.

[0014] In an optional embodiment, the fixed claw has a through groove communicating with the clamping channel and the operating channel. The elastic claw includes an extension and a clamping part. One end of the extension is connected to the fixed claw, and the other end is suspended and connected to the clamping part. In its natural state, the elastic claw has the extension located in the through groove and the clamping part extending into the clamping channel.

[0015] In an optional embodiment, the fixing claw has a limiting surface facing the clamping channel, and in its natural state, the clamping portion protrudes from the limiting surface in a direction perpendicular to the limiting surface.

[0016] In an optional embodiment, the elastic claw and the fixed claw are integrated into one piece.

[0017] In an optional embodiment, the first gripper has a first limiting end face, the second gripper has a second limiting end face, and the side of the guide block facing the tube body abuts against the first limiting end face and the second limiting end face.

[0018] In an optional embodiment, the plate holder further includes a handle connected to the tube body.

[0019] Secondly, this utility model provides a side-path fusion operation component, including a fixing plate and a plate holder as described in any of the foregoing embodiments. The fixing plate is configured to be clamped in the clamping channel. The fixing plate has a third wire-threading hole communicating with the first wire-threading hole and screw holes located on both sides of the third wire-threading hole.

[0020] In an alternative embodiment, the screw hole extends toward an axis away from the third threading hole, gradually moving away from the tube body.

[0021] The plate holder and side-path fusion operation assembly provided by this utility model can produce the following beneficial effects:

[0022] When using the plate holder provided in the first aspect of this utility model, the holder is held in hand and the fixing plate is clamped through the clamping channel. The guide wire is then inserted sequentially into the fixing plate, the first wire-passing hole, the operating channel, and the second wire-passing hole. Guided by the guide wire, the fixing plate is pushed to the installation position of the vertebral body. Then the guide wire is removed. The tool used to tighten the screw can pass through the operating channel from one side of the clamping assembly to the other side of the clamping assembly, and the screw is driven into the vertebral body at an outward tilt to achieve the fixation of the fixing plate.

[0023] Compared with the prior art, in the first aspect of the present invention, the guide block facing the tube body forms an operating channel with the gripper assembly in the plate holder. The tool used to tighten the screw can pass through the operating channel to tighten the screw. The operating channel provides operating space for the tool, making it convenient for the operator to tilt the screw outward and drive it into the cone body.

[0024] The side-path fusion operation component provided in the second aspect of this utility model includes the plate holder provided in the first aspect of this utility model, thereby having all the beneficial effects of the plate holder provided in the first aspect of this utility model. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 A three-dimensional structural diagram of the plate holder provided in an embodiment of the present utility model from a first-view perspective;

[0027] Figure 2 A three-dimensional structural diagram of the plate holder provided in an embodiment of the present utility model from a second perspective;

[0028] Figure 3 for Figure 2 A magnified view of part A;

[0029] Figure 4 A three-dimensional structural schematic diagram of a side-path fusion operation component during operation, provided for an embodiment of this utility model;

[0030] Figure 5 A top view of a side-path fusion operation component during operation, provided in an embodiment of this utility model;

[0031] Figure 6A three-dimensional structural schematic diagram of the gripper assembly provided in an embodiment of this utility model;

[0032] Figure 7 for Figure 6 A magnified view of part B;

[0033] Figure 8 A three-dimensional structural diagram of the guide block provided in an embodiment of this utility model;

[0034] Figure 9 A three-dimensional structural diagram of the fixing plate provided in an embodiment of this utility model.

[0035] Icons: 1 - Tube body; 11 - Second wire threading hole; 2 - Clamping claw assembly; 21 - Fixed claw; 211 - Through groove; 212 - Limiting surface; 22 - Elastic claw; 221 - Extension; 222 - Clamping part; 23 - Second limiting end face; 24 - Second limiting side face; 3 - Guide block; 31 - First wire threading hole; 32 - Third limiting end face; 4 - Fixed plate; 41 - Third wire threading hole; 42 - Screw hole; 43 - Groove; 5 - Clamping channel; 6 - Operating channel; 7 - Handle; 8 - Fusion device; 9 - Guide wire; 10 - Screw. Detailed Implementation

[0036] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0037] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0040] The first aspect of this utility model is to provide a plate holder, such as... Figures 1 to 4 As shown, it includes a tube body 1, a gripper assembly 2, and a guide block 3. One end of the gripper assembly 2 is connected to the tube body 1, and the other end is connected to the guide block 3.

[0041] The guide block 3 forms a clamping channel 5 for clamping the fixing plate 4 between the side of the guide block 3 away from the tube body 1 and the clamping claw assembly 2. The guide block 3 forms an operation channel 6 between the side of the guide block 3 facing the tube body 1 and the clamping claw assembly 2. The guide block 3 has a first wire-passing hole 31 with both ends communicating with the clamping channel 5 and the operation channel 6 respectively.

[0042] The tube body 1 has a second wire-threading hole 11 that communicates with the operating channel 6.

[0043] by Figure 4 and Figure 5 The following is a detailed description of the use of the plate holder provided in the first aspect of this utility model, using an example: First, the fusion device 8 is implanted into the intervertebral space, then the guide wire 9 is connected to the fusion device 8. Next, the plate holder is held in hand, and the fixing plate 4 is clamped through the clamping channel 5. The guide wire 9 is then sequentially inserted into the fixing plate 4, the first threading hole 31, the operating channel 6, and the second threading hole 11. Guided by the guide wire 9, the fixing plate 4 is pushed to the installation position on the vertebral body. Then, the guide wire 9 is removed, and the tool used to tighten the screw 10 can be accessed through the operating channel 6. Figure 5 The screw 10 is driven into the vertebral body at an outward tilt, from one side of the clamp assembly 2 to the other side, in the direction of the middle arrow, thereby fixing the fixation plate 4.

[0044] It should be noted that the outward tilt of the screw 10 refers to the direction of screw 10 gradually moving away from the direction of the fusion device 8. Tightening the screw 10 outward can achieve the effect of self-locking and preventing screw retraction, and the position of the fixation plate 4 relative to the vertebral body is more stable.

[0045] Compared to existing technologies, the plate holder provided in the first aspect of this utility model is equipped with a guide block 3. The guide block 3 can guide and limit the guide wire 9, ensuring the stability of the guide wire 9 relative to the end of the gripper assembly 2. In addition, the side of the guide block 3 facing the tube body 1 forms an operating channel 6 with the gripper assembly 2. The tool used to tighten the screw 10 can pass through the operating channel 6 at an angle to tighten the screw 10. The operating channel 6 provides operating space for the tool, making it convenient for the operator to tilt the screw 10 outward and drive it into the cone body.

[0046] In alternative implementations, such as Figure 2 and Figure 3 As shown, the gripper assembly 2 includes a first gripper and a second gripper that are arranged opposite to each other and spaced apart. One end of the first gripper and the second gripper are both connected to the tube body 1, and the other end is connected to the guide block 3. A gripping channel 5 is formed between the first gripper and the second gripper on the side of the guide block 3 away from the tube body 1, and an operating channel 6 is formed between the first gripper and the second gripper on the side of the guide block 3 facing the tube body 1.

[0047] In the above embodiments, the first and second grippers can not only form a clamping channel 5 with the guide block 3, but also an operating channel 6 with the guide block 3, simplifying the structure of the gripper assembly 2. Because the first and second grippers are spaced apart, it is also convenient to form a side opening for the tool to enter and exit the operating channel 6, as well as a clamping structure for clamping the fixing plate 4.

[0048] Specifically, to ensure that the operating channel 6 has a sufficiently long operating space, both the first and second grippers are elongated, with one end connected to the tube body 1 and the other end connected to the guide block 3, and the two are arranged in a mirror-symmetrical manner.

[0049] In alternative implementations, such as Figure 3 , Figure 6 and Figure 7 As shown, both the first and second grippers include a fixed gripper 21 and a resilient gripper 22, wherein:

[0050] One end of the fixing claw 21 is connected to the tube body 1, and the other end is connected to the guide block 3;

[0051] One end of the elastic claw 22 is connected to the fixed claw 21, and the other end of the elastic claw 22 is suspended in the air.

[0052] In use, the elastic claws 22 of the first and second grippers can extend into the clamping channel 5 in their natural state. When the fixed plate 4 is picked up, the fixed plate 4 enters the clamping channel 5 and squeezes the elastic claws 22 outward. The elastic claws 22 deform to provide clamping force for clamping the fixed plate 4.

[0053] In the above embodiments, the fixing claw 21 can fix the guide block 3, and the elastic claw 22 can provide a holding force to ensure that the guide block 3 is stably installed on the gripper assembly while the fixing plate 4 is stably picked up.

[0054] In alternative implementations, such as Figure 7 As shown, the fixed claw 21 has a through groove 211 that communicates with the clamping channel 5 and the operating channel 6. The through groove 211 passes through the fixed claw 21, and the through direction of the through groove 211 on the first claw is parallel to the direction of the first claw facing the second claw, and the through direction of the through groove 211 on the second claw is parallel to the direction of the second claw facing the first claw.

[0055] In addition, such as Figure 7 As shown, the elastic claw 22 includes an extension 221 and a clamping part 222. One end of the extension 221 is connected to the fixed claw 21, and the other end is suspended and connected to the clamping part 222, so that the elastic claw 22 can deform when the clamping part 222 is squeezed by the fixed plate 4.

[0056] like Figure 7 As shown, the upper gripper is designated as the first gripper, and the lower gripper as the second gripper. In its natural state, the extension 221 of the elastic gripper 22 is located within the through groove 211, and the clamping part 222 extends into the clamping channel 5. When the fixed plate 4 is picked up, the fixed plate 4 enters the clamping channel 5 and presses upward against the clamping part 222 of the first gripper, causing the extension 221 of the first gripper to deform upward. Simultaneously, it presses downward against the clamping part 222 of the second gripper, causing the extension 221 of the second gripper to deform downward. The clamping parts 222 of the first and second grippers cooperate to provide clamping force for the fixed plate 4.

[0057] In an optional embodiment, the fixing claw 21 has a limiting surface 212 facing the clamping channel 5, such as Figure 7 As shown, in its natural state, the elastic claw 22 has its clamping part 222 protruding from the limiting surface 212 in a direction perpendicular to the limiting surface 212.

[0058] When the fixed plate 4 is picked up, the fixed plate 4 enters the clamping channel 5 and presses the clamping part 222 of the first clamping jaw upward. The distance between the bottom end of the clamping part 222 and the limiting surface 212 of the first clamping jaw gradually decreases. At the same time, the clamping part 222 of the second clamping jaw is pressed downward. The distance between the top end of the clamping part 222 and the limiting surface 212 of the second clamping jaw gradually decreases. The limiting surface 212 can assist the clamping part 222 in clamping and limiting the fixed plate 4, ensuring that the fixed plate 4 is clamped more stably.

[0059] Specifically, the clamping part 222 can be a protruding structure, and an opening for the fixing plate 4 to enter the clamping channel 5 is formed between the end faces of the first clamp and the second clamp. The bottom surface of the clamping part 222 in the first clamp and the top surface of the clamping part 222 in the second clamp both have guide slopes. Along the direction that gradually approaches the opening, the distance between the guide slopes in the two clamping parts 222 gradually increases, so that the fixing plate 4 can transmit the pressure to the extension part 221 through the clamping part 222 when entering the clamping channel 5.

[0060] In alternative implementations, such as Figure 7 As shown, the elastic claw 22 and the fixed claw 21 adopt an integrated structure.

[0061] The above-described embodiment facilitates the processing of the first and second grippers, eliminating the need for additional connection between the elastic gripper 22 and the fixed gripper 21.

[0062] In alternative implementations, such as Figure 7 As shown, to ensure more stable installation of the guide block 3, the first gripper has a first limiting end face, and the second gripper has a second limiting end face 23. The first limiting end face and the second limiting end face 23 are mirror-symmetrically arranged. When assembling the guide block 3, as follows... Figure 8 As shown, the guide block 3 has a third limiting end face 32 on the side facing the tube body 1. The third limiting end face 32 abuts against the first limiting end face and the second limiting end face 23. Therefore, the first end face and the second limiting end face 23 can limit the position of the guide block 3 in the length direction of the gripper assembly 2. Especially when the guide block 3 pushes the fixing plate 4 to the installation position of the cone, the first end face and the second limiting end face 23 can support the guide block 3, ensuring the stability of the guide block 3. At the same time, it increases the contact area between the guide block 3 and the first and second grippers, which is beneficial to the installation stability of the guide block 3.

[0063] Specifically, such as Figure 7 As shown, the second limiting end face 23 is located on the fixed claw 21 and the extension 221 of the second gripper. Similarly, the first end face is located on the fixed claw 21 and the extension 221 of the first gripper.

[0064] In addition, such as Figure 7 As shown, the second limiting end face 23 also has second limiting side faces 24 perpendicular to the second limiting end face 23 on both sides. The second limiting side faces 24 define the position of the guide block 3 relative to the second gripper in a direction parallel to the second limiting end face 23. Similarly, the first limiting end face also has second limiting side faces perpendicular to the first limiting end face on both sides.

[0065] In alternative implementations, such as Figure 1 and Figure 2 As shown, for ease of use by the user, the board holder also includes a handle 7, which is connected to the tube body 1.

[0066] Specifically, such as Figure 1 As shown, the handle 7 and the tube body 1 can be connected at an obtuse angle for easy operation by the user.

[0067] A second aspect of this utility model provides a side-path fusion operation component, which includes a fixing plate 4 and the aforementioned plate holder. Figure 9 As shown, the fixing plate 4 is configured to be clamped in the clamping channel 5. The fixing plate 4 has a third wire-threading hole 41 that communicates with the first wire-threading hole 31 and screw holes 42 located on both sides of the third wire-threading hole 41.

[0068] In use, first implant the fusion device 8 into the intervertebral space, then insert the guide wire 9 into the hole at the tail of the fusion device 8. The two can be connected by a detachable method such as threaded connection or snap-fit. Hold the fixation plate 4 with a plate holder, and thread the guide wire 9 sequentially through the third threading hole 41, the first threading hole 31, the operating channel 6, and the second threading hole 11. Guided by the guide wire 9, push the fixation plate 4 to the position to be installed on the vertebral body. At this time, remove the guide wire 9, and use a tool to pass through the operating channel 6 and drive in two screws to complete the installation of the fusion device and the fixation plate 4.

[0069] During the above operation, the guide wire 9 can be used to traction the fixation plate 4 to accurately align with the fusion device, which improves the safety of the operation, shortens the operation time, reduces the patient's pain, and facilitates better recovery.

[0070] The fixing plate 4 can be made of titanium. For example... Figure 9 As shown, the two grooves 43 on the side of the fixing plate 4 are used for the gripper to grasp.

[0071] In an alternative embodiment, the screw hole 42 extends toward the axis away from the third threading hole 41 in a direction that gradually moves away from the tube body 1, so that the screw 10 can be driven into the cone body at an outward tilt.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A plate holder, characterized in that, It includes a tube body (1), a gripper assembly (2) and a guide block (3), one end of the gripper assembly (2) is connected to the tube body (1) and the other end is connected to the guide block (3); The guide block (3) forms a clamping channel (5) for clamping the fixing plate (4) between the side of the guide block (3) away from the tube body (1) and the clamping claw assembly (2). The guide block (3) forms an operation channel (6) between the side of the guide block (3) facing the tube body (1) and the clamping claw assembly (2). The guide block (3) has a first wire-passing hole (31) with both ends communicating with the clamping channel (5) and the operation channel (6) respectively. The tube body (1) has a second threading hole (11) that communicates with the operation channel (6).

2. The plate holder according to claim 1, characterized in that, The gripper assembly (2) includes a first gripper and a second gripper that are arranged opposite to each other and spaced apart. One end of the first gripper and the second gripper are both connected to the tube body (1), and the other end of the second gripper is both connected to the guide block (3). The guide block (3) forms the clamping channel (5) between the side facing away from the tube body (1) and the first and second clamps, and the guide block (3) forms the operating channel (6) between the side facing the tube body (1) and the first and second clamps.

3. The plate holder according to claim 2, characterized in that, Both the first gripper and the second gripper include a fixed gripper (21) and an elastic gripper (22); One end of the fixing claw (21) is connected to the tube body (1), and the other end is connected to the guide block (3); One end of the elastic claw (22) is connected to the fixed claw (21), the other end of the elastic claw (22) is suspended, and the elastic claw (22) extends into the clamping channel (5) in its natural state to deform and provide clamping force when the fixed plate (4) is clamped in the clamping channel (5).

4. The plate holder according to claim 3, characterized in that, The fixed claw (21) has a through groove (211) that communicates with the clamping channel (5) and the operating channel (6). The elastic claw (22) includes an extension (221) and a clamping part (222). One end of the extension (221) is connected to the fixed claw (21), and the other end is suspended and connected to the clamping part (222). In its natural state, the elastic claw (22) has the extension (221) located in the through groove (211) and the clamping part (222) extending into the clamping channel (5).

5. The plate holder according to claim 4, characterized in that, The fixed claw (21) has a limiting surface (212) facing the clamping channel (5), and the elastic claw (22) in its natural state has the clamping part (222) protruding from the limiting surface (212) in a direction perpendicular to the limiting surface (212).

6. The plate holder according to claim 3, characterized in that, The elastic claw (22) and the fixed claw (21) are integrated into one piece.

7. The plate holder according to claim 2, characterized in that, The first gripper has a first limiting end face, the second gripper has a second limiting end face (23), and the guide block (3) facing the tube body (1) abuts against the first limiting end face and the second limiting end face (23).

8. The plate holder according to any one of claims 1-7, characterized in that, The plate holder also includes a handle (7), which is connected to the tube body (1).

9. A side-path fusion operation component, characterized in that, Includes a fixing plate (4) and a plate holder as described in any one of claims 1-8, the fixing plate (4) being configured to clamp in the clamping channel (5), the fixing plate (4) having a third threading hole (41) communicating with the first threading hole (31) and screw holes (42) located on both sides of the third threading hole (41).

10. The side-path fusion operation component according to claim 9, characterized in that, Along a direction gradually away from the tube body (1), the screw hole (42) extends toward the axis away from the third thread hole (41).

Images